Pile splice



Feb. 15, 1949. K. KE RHAW ETAL PILE SPLICE Filed June 11, 1946 Mean H1 1.

Mean (0w INVENTORS KE'RJ/MW KNOX 7? y ATTORZEY W l atented Feb. 1 949 -UNITED s PATENT :.o F.-i1=.rca

SPITCE Knox KershaW-and Royce kershaw, Montgomery fAla.

.ApplicationJuneH, 1946, Serial No 675967 invention "relates to piling construction and" particularly "to means ,lfor "repairing piling that has been'ea'ten away "by rot, marine insects, and/or corrosion, which often occurs,'particularly in salt water. One of the objjects'ofourinvention is to provide an improved "splice for connecting steel piling to wood in making 'such repairs.

'A furtherobject of our invention is 'toprovi'de splicing meansfor repairing piling which shall be adapted for connecting a new sectionof'steel piling to an existing wood pile in such a'"waythat the steel section shall be rigidly connected to the wood piling and'shall beprotect'ed against corro- $1011.

-A more.specific object of 'our"invention "is"'to provide animproved splice'ior connectingaste'el pile to a wood pile which shall be especially adapted for enclosing in concrete and thereby constituting a reinforcing *forlthe concrete.

In theprior patent to JohnKnoa'Kers'h'aw, No. 2,013,214, dated September 3, 1935, there "is shown, described and claimed a .mtho'd'for repairing existing woodpiling in which the'defective portion of the woodpilingbet'ween' the mud lineand solid Wood above .the water. level wasc'ut away and a concrete .pile .sectioniinterp'osedto replace the cut away woodcpilesection,"together with end portions .on the concrete section 'telescoping over-the remaining portionsof'ithe'wood pile. The present "invention contemplates en ployinga steel section between'the woodi pile and the -superstructure instead of employing a concrete section and the upperendufthewood.,pile, the steel section having a novelspliceforconnecting it to the woodI pile below'themudlline.

Our invention stillfurther contemplates the novel installationand arrangement of parts illustrated in the accompanying drawings, forming a part of this applicationrinwhich Fig. 1 is a view showing a construction in which an old wood pile has been replaced by a' steel pile in accordance with our-inverition-and the latter repaired by interposing anew steel section;

Figs. 2 and 3 are views taken at right angles to each otherof the splice for'connecting the steel lpile' to the "Wood'pile;

Figs. i-and 5 -are similar views drawn fto'a reduced scale 'from'Figs. 2 'and*'3;"and

Fig. 6 is a detailsectional-sview on a reduced scale taken along line vI- ellLof Fig. 2.

V Referring now to the "drawing for a better understanding of our invention, weshow almarine construction involving a superstructure l0 which may be a wharf, bridge, building, or any other construction supported over water and comprising stringers i 1 I havingsuitable decking l z thereon. Thesuperstructure is supported-by 191mg, and in the illustration :we L show Ethe -sound portion' T3 of the origina'l wood piling left in fplace,

it being assumed that the portion thereof above the mu'dtlin-e "has been destroyed by rot, marine insects; or the like. piling I3 and the superstructure "Ifii "areourimproved repair sections which are icomprise'dof steel bea'ms l,4,"prefera'bly=in thetformiof -H sections. At 'I the upper endof therepair"se'ctionywe provide "plates It upon which "the superstructure 'rests'an'd" at thelower end a splice forfjoining'the steel section "to the existing wood piling "which splice forms "an important feature of our in- 'vention.

' In theform shown in'Figs. '2' and 'B' ofthedraW- 'ings, our'iniprovedsplice "comprises a plate P! which isfp'referably circular in form; secured to the lower end of the steelrepairisection I l and resting on 'theupperendof the existing wood piling. Siurounding the plate 1'! isa"s1eeve. H3 in .the I'form of a steel plate rolled to'tfit 'aboutthe circular plate "l1. Atjthe lower'iend c'fthe'c'sieeve is fa flaredjpoi 'tion 20 which 'a'idsi'in' placing the splice "over the' upper end "of the existing wood pile. A plurality ioflong'itudinally eii'tending-"reinforcingiplates fr eiijointhe sleeve "'lsftofthe steel repair section 'l l. 'Tliese'pl'ates areTD-referably :four in number and are disposeiledgewiseto the sleeve .and to the repair section'and arewlded 'to bothQtheupper ends of'the jplates extending inwardlylto be attached to the repair section "f4. Theplatesi'l 9 are provided withholes72'l forfsuitable brace rods .22 having theirupperends securedtdbra'c'ketsl'a of adjacent sections and vloein'gprovided with turn-bucklesiz l' for"ti'ghtening them. "The sleeve l8 isprovide'dwith holes '26fin the side thereof through which 'drifthins "2! areudriven to secure the sleeve to the upper end of the wood pilingllB. .Also, I preferably provide barbst'aon thejin'side of thesleeve which engage the wood piling aslthe sleeve.is.,ldriven 'down over it. 'After'the splice'islin.place itis preferably stabilized by grout .of .fneet cement which maybe pumped inaroundlthe uppervend of the wood piling to -.Ifill any voids, lfAlso, the steel .section is preferably provided with a concrete encasement 29 which. extends 'irom a :point ,belowlthe meanlow water level .to a point above the mean .highwater level,..asshown.

The splice-shown in. Figs 4 and 5 comprises .a

;plate -3! secured to thenlowerv end of .the steel repair section It having a sleeve 32 rolled to fit about the plate and over the upper end of the Interposed-between the woo'd 3| is provided with holes for the reception of drift pins 36 which are driven into the upper endof the wood pile l3. Barbs 31, in accordance with Y this modification, are provided on the reinforcing bars 34, near the lower ends thereof, to engage the wood pile.

In addition to these securing means, we may drive a wedge 38' between the lower ring 33 and the wood pile l3.

As in the previous modification, when the splice is installed, grout of neet cement should be pumped in around it to stabilize the lower end of the repair section with respect to the wood piling as indicated at 40, and also to fill all voids between the parts of the splice and the upper end of the Wood piling. We thus provide a rigid connection between the steel repair section and the upper end of the wood piling.

. From the foregoing, it will be observed that our improved steel repair section can be interposed between the imperishable wood section below the mud line and the superstructure, without disturbing the superstructure. Inasmuch as the principal zone of attack for corrosion of metal is at the water line, the reinforced concrete encasement surrounding the steel repair section at that point fully protects it and we thus provide a relatively long life construction. Furthermore, it will be seen that the connection between the surrounding the upper end of the wood pile, longitudinally extending reinforcing members joined to the sleeve and to the steel beam, securing means coacting between the splice and the wood piling, and a cement encasement surrounding the lower end of the steel section and the splice.

3. In a repair means for a marine structure including a superstructure and wooden piling which has been destroyed above the mud line, a repair section in the form of a steel beam inter- .posed between the superstructure and the existing wood piling below the mud line, a splice comprising a circular metal plate secured to the lower end of the steel section and resting on the upper end-of the wood pile, a sleeve secured to the plate and surrounding the upper end of the wood pile, longitudinally extending reinforcing members joined to the sleeve and to the steel beam, securing means coacting between the splice and the wood piling, a cement encasement surrounding the lower end of the steel section and the splice,

. and a second cement encasement surrounding splice at the lower end of the repair section and the upper end of the existing wood pile is extremely rugged and not liable to become displaced.

While we have shown our invention in but two forms, it will be obvious to those skilled in the art that it is not so limited, but is susceptible of various other changes and modifications, without departing from the spiritthereof, and we desire, therefore, that only such limitations shall be placed thereupon as are specifically set forth in the appended claims.

What we claim is:

1. In a repair means for a marine structure including a superstructure and Wooden piling which has been destroyed above the mud line, a repair section in the form of a steel beam interposed between the superstructure and the existing Wood piling below the mud line, a splice comprising a circular metal plate secured to the lower end ofthe steel section and resting on the upper end of the wood pile, a sleeve secured to the plate and surrounding the upper end of the wood pile, longitudinally extending reinforcing members joined to the sleeve and to the repair section, and securing means coacting between the splice and the wood piling.

2. In a repair means for a marine structure including a superstructure and, wooden piling which has been destroyed above the mud line, a repair section in the form of a steel beam interposed between the superstructure and theexisting wood piling below the mud line, a splice comprising a circular metal plate secured to the lower end of the steel section and resting on the upper end of the wood pile, a sleeve secured to the plate and the steel section at the water line.

'4. In a repair means for a marine structure including a superstructure and wooden piling which has been destroyed above the mud line, a repair section in the form of a steel beam interposed between the superstructure and the existing wood piling below the mud line, a splice comprising a circular metal plate secured to the lower end of the steel section and resting on the upper end of the wood pile, a sleeve secured to the plate and surrounding the upper endof the wood pile, longitudinally extending reinforcing members joined to the sleeve and to the steel beam, securing means coacting between the splice and the wood piling, a cement encasement surrounding the lower end of the steel section and the splice, a'second cement encasement surrounding the steel section at the water line, and brace connecting means at the upper and lower ends of the repair section.

5. In a repair means for a marine structure, a splice for connecting a steel repair section to an existing wood pile comprising a transverse plate secured to the lower end of the steel section and resting on the upper end of the wood line, a downwardly extending sleeve secured to the plate and surrounding the upper end of the wood pile, and longitudinally extending reinforcing plates joined to the sleeve and to the steel section.

6. A repair means in accordance with claim 4 in which the reinforcing members are T shaped in cross section and are bent toward the steel beam to be secured thereto.

KNOX KERSI-IAW. ROYCE KERSHAW.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number 601,171 France 1925 

